Jacob Downing, 17, of 4361 Slate Hill Road, was charged with one count of first-degree falsely reporting of an incident, a felony, and one count of third-degree falsely reporting of an incident, a misdemeanor, said Onondaga County Sheriff’s Department Sgt. John D’Eredita, who provided these details:

Detectives allege that Downing made the first anonymous call from his cellphone at about 8:15 a.m., just before he was dismissed from school due to an illness. During the call, Downing told dispatchers that a student armed with a weapon was going to kill students. As the anonymous caller, Downing identified himself as the armed student.

The school resource officer from the Marcellus Police Department began the investigation while school officials implemented the school’s lockdown procedures. Sheriff’s deputies and members of the state police arrived and coordinated efforts.

Deputies quickly learned that Downing was not at school. While he was going home, the school received a text message that there was a bomb at the school. No bomb was found during a search of the building that was conducted with assistance from the sheriff’s department and state police K-9.

Downing was found at his residence. Investigators secured Downing’s cellphone and searched his home but found no other evidence.

Downing was to appear in the Town of Marcellus Court today for his arraignment.